Pen



FIG. 1 is a top, side, perspective view of the pen showing my new design;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a top plan view of the pen, shown separately without the cap for ease of illustration;

FIG. 5 is an inverted left side view of the pen, shown separately without the cap for ease of illustration;

FIG. 6 is a bottom, side, perspective view of the pen, shown separately without the cap for ease of illustration;

FIG. 7 is a top plan view of the cap, shown separately without the pen for ease of illustration;

FIG. 8 is a side elevational view of the cap, shown separately without the pen for ease of illustration; and,

FIG. 9 is another top, side, perspective view of the pen, shown separately without the cap for ease of illustration.

The stippling shown in the drawings represents surface shading and not a surface texture. 

We claim the ornamental design for a pen, as shown and described. 